The integrated environment manages design projects for electrical ladder diagrams. It has a database of standard diagram schematics and provides customization options. The toolset includes a simulation module to observe authentic hardware interactions.
The Constructor program makes the creation, testing, troubleshooting, teaching and printing of electrical ladder diagrams, diagram schematics and one line diagrams fast and easy. The design can be edited and re-tested saving valuable time when it comes to hardwired circuits and troubleshooting scenarios. The circuit will perform the same as a hardwired electrical circuit.
v12.0 [Mar 26, 2015] 
Now with PDF Export
 Now with PCF (Portable Constructor Format) Export
 Free PCF (Portable Constructor Format) Viewer now available
 Now with more symbols and symbol classes: More IEC symbols, center off switches and center off selector switches
 Virtually Energize and Operate Your Diagram
 Works with Windows XP, Vista, 7 or 8.
 Export features: PDF, PCF, DWG, DXF, JPG, GIF and more...
 Change Wire Colors and Styles
 Built-in Symbol Editor
 Built-in Symbol Libraries of over 800 JIC, NEMA and IEC Symbols
 Symbol Library Search
 Sound Effects (Hear the Difference!)
 Interactive on-screen help
 Easier and faster to use than most CAD Software
 Generic PLC I/O modules and Terminal Strip libraries
 Automatic Wire Numbering and Re-numbering
 Auto High-Lighting of Contacts Assigned to Coils.